Recent questions tagged Java

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java - Trying to set text of EditText from DatePicker DialogFragment

I am simply trying to get the date from a datepicker dialog I created from one of the many android datepicker ... way but to no avail. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Android: Change button text after MediaPlayer audio ends

So I'm following Big Nerd Ranch's Android Programming book and I have an audio file playing through MediaPLayer. I ... ) mPlayer.pause(); } } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Prevent Jackson XML mapper from adding wstxns to namespaces

When serialising objects to XML and specifying namespaces for properties using @JacksonXmlRootElement(namespace = "http: ... not ideal. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Is there a way to store data in a JButton?

My program currently adds an image to a List, which it then creates a Jbutton dynamically storing a thumbnail. Like ... image is in the List. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Why the JSP pages under WEB-INF can't be accessible with sendRedirect method?

Those pages under WEB-INF are accessible using forward method of RequestDispatcher. Whats wrong with sendRedirect? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - How to stop next thread from running in a ScheduledThreadPoolExecutor

I have a ScheduledThreadPoolExecutor which has one thread and runs for every 30 seconds. Now, if the current executing ... do I achieve this? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Populating TableView In JavaFX with TableView created in FXML File

I am a newbie in JavaFX and also in java. Guys can you please figure out this code if what is lacking ... Lacking? Please help me guys.. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Spring 3.2 @ResponseBody not working with a Model return value

The following mapping was working with Spring 3.1, but is not working with Spring 3.2. I get a 404 error with ... to be rendered in a view. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Struts 2 Select Tag Default Value

I'm creating a database record edit form using Struts. <s:select id="status" name="newRecord.status" list=" ... an object with ID and String? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - How to Merge Multiple MP4 Videos files in single file

I need to merge the multiple MP4 videos file to a single file using java. Can any one tell me how to ... . Your help would be appreciated. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Primefaces dynamic columns, programmatically

I'm in the process of rewriting a (very) big and old Richfaces application using Primefaces. I now have a ... just print a java object hash. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - c3p0 deadlocks in Hibernate

I am new to hibernate and have started using C3P0 as the connection pooling manager with hibernate because without that ... a lot of threads. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - JPA Hibernate collections not lazily loaded

I have a JPA setup in such a way that if I do not use lazy load, almost the entire database will be loaded ... . Thank you very much in advance! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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310 views

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java - Returning local reference created by JNI from a native method

JNI reference says that "Local references are valid for the duration of a native method call. They are freed ... methods back to Java code? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - How would you access Eclipse JDT index?

How do I access the index that eclipse uses to do Java search, import, etc? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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436 views

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java - getContentLength() returning -1 on some devices and not others

I'm trying to obtain the size of a file before I download it. I use conn.getContentLength(); to ... file maybe without using HttpURLConnection. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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585 views

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java - What does "Reason: DHPublicKey does not comply to algorithm constraints" mean?

I saw this error when I wanted to connect to another machine: SEVERE: Could not create connection XXXXX: XXXXX ... is the reason for that? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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390 views

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java - Android custom listener for an event

I'm trying to fire an event when an integer value is updated, but it's failing. Here's the code I'm ... Is there something I am missing? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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346 views

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java - JSF access html element value in bean class

I have a JSF application in which I have a combo box. <h:selectOneMenu id="collectorType" value="#{activityDataSource. ... "); } Any help ! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Understanding try & catch and error handling

import java.util.Scanner; public class Lab4_5 { public static void main(String[]args) { Scanner scan= new Scanner( ... =scan.nextInt(); } } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Fuseki how to add Pellet reasoner

I want to use pellet reasoner with my Fuseki 2.3.1 First: I added Pellet reasoner to my config. ... .core.assembler.DatasetAssembler at org.apache.jena.assembler.assemblers.Reasone...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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308 views

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java - Run app on currently running emulator (Android)

I am beginner to Android. I have an emulator running currently. I created an android app. When I run that ... same emulator that is being run. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Jetty - how to programatically enforce security-constraint in web.xml

In our web.xml we had the following security-constraint <security-constraint> <web-resource-collection> <web- ... a custom configuration system. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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397 views

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java - Order of initialization/instantiation of class variables of derived class and invoking of base class constructor

I want to figure out the order of 1) initialization/instatiation of derived class variables 2) invoking of base ... . Is this order correct? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - How to handle invalid SSL certificate with Apache client 4.5.5?

I am trying to use Apache Client 4.5.5 to connect to one of my web server. I am trying to use ... httppost = new HttpPost("myURL"); See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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653 views

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java - Android 9.0 wifi hotspot API

What is the API call I need to make in Android 9.0 (Android P) to get a Wifi hotspot name? public static String ... ; } Android 9.0 returns "". See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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398 views

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java - Xpath changing after the page gest loaded every time

I am using Selenium WebDriver along with Java. I am trying to access the 'Login ID' text box in that page but ... with a single piece of code? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - After having updated struts2 from 2.3.16 to 2.3.32（fix the S2-045), the JSP file can not resolve some Objects' fields

Recently we fixed the struts2's 'S2-045' problem.I updated all the struts2 related jar files including freemarker, ... index.jsp or java-files. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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